Technical Service Bulletins
Search 172,063 manufacturer communications covering 879 vehicle makes from 1955 to 2025.
Showing 2,701 bulletins for MACK
SB-21-5035
Oct 17, 2008
062200 ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
MACK TRUCK: REVISED FAN HUB MOUNTING BOLT TORQUE. FOR THIS APPLICATION ONLY, THE FAN HUB MOUNTING STUD MATERIAL PROPERTIES AND LENGTH HAVE BEEN CHANGED TO 45MM (WAS 40MM) TO ENSURE FULL NUT ENGAGEMENT. MODEL YEARS UNKNOWN. *
SB-12-1043
Oct 10, 2008
020000 SUSPENSION
MACK TRUCK: SUSPENSION CROSSMEMBERS, PRIMAAX REAR SUSPENSION. MODELS EQUIPPED WITH THE HENDRICKSON PRIMAAX REAR AIR SUSPENSION MAY DEVELOP A CRACK IN THE RADIUS OF THE LOWER END GUSSET. *PE
SB-222-015
Oct 9, 2008
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
MACK TRUCKS: REVISED HIGH PRESSURE FUEL INJECTION LINES FOR E-TECH, ASET AC, AI AMI ENGINES. INJECTION LINE PART NO. 203GC4383M SUPERSEDED OTHER PART NOS. 203GC4368M, 203GC4371M, 203GC4380M, 203GC4380AM AND 203GC4380BM. *PE
SB-230002
Oct 3, 2008
040000 SERVICE BRAKES, AIR
MACK TRUCKS: SERVICE BRAKE SWITCH TEST FOR CRUISE CONTROL ACTIVATION. A CHANGE WAS MADE TO THE VEHICLE ELECTRONIC CONTROL UNIT (VECU) SOFTWARE WHICH AFFECTS CRUISE CONTROL. MODELS CXU, CHU, GU, TD, LEU, MRU. *PE
P-1670
Sep 18, 2008
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
MACK TRUCK: UNIT INJECTOR AND EXHAUST ROCKER ARMS, COMBUSTION SEALING WASHER AND UNIT INJECTOR YOKE REPLACEMENT. MODEL AND MODEL YEARS UNKNOWN. *PE
P-1672
Sep 18, 2008
061000 ENGINE AND ENGINE COOLING:ENGINE
EXHAUST ROCKER ARM, COMBUSTION SEALING WASHER AND UNIT INJECTOR YOKE REPLACEMENT. *PE
P-1650
Jul 31, 2008
062000 ENGINE AND ENGINE COOLING:COOLING SYSTEM
MACK: MODEL MRU WITH MANUAL TRANSMISSION. COOLING SYSTEM SURGE TANK REPLACEMENT. *PE
SB 234021
Jul 31, 2008
063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
MACK TRUCK: INLET ELBOW CRACKS - VERTICAL BACK-OF-CAB DIESEL PARTICULATE FILTER (DPF). (NOT APPLICABLE TO MACK TRUCKS AUSTRALIA). *PE MODELS CXU, AND CH. UPDATED 9/10/08. *PE
P-1653
Jul 30, 2008
060000 ENGINE AND ENGINE COOLING
MACK TRUCK: COOLING SYSTEM SURGE TANK AND TRANSMISSION OIL COOLER SUPPLY PIPE, REPLACEMENT FOR MRU LEU MODELS WITH AUTOMATIC TRANSMISSION. *PE
SB-735-005
Jul 25, 2008
036100 SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
MACK TRUCK: BENDIX ABS EC-60 ADVANCED ECU REPROGRAMMING OF MODELS CXU, CHU, GU. MODEL YEARS UNKNOWN. *PE
SB-213-057
Jul 23, 2008
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
MACK TRUCK: CAMSHAFT WEAR INSPECTION OF ENGINE MODELS MP7, MP8, MP10. *PE
234014
Jul 22, 2008
063200 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
EXHAUST PIPE FLANGE CRACKS AT TURBOCHARGER CONNECTION - CXN AND CHN MODELS EQUIPPED WITH ASET AC ENGINES. *NJ UPDATED 9/10/08. *PE
P1659
Jul 21, 2008
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
MACK TRUCK: DIESEL PARTICULATE FILTER (DPF) ATOMIZATION MODULE REPLACEMENT. MODELS MRU AND LEU MANUFACTURED JANUARY 2, 2007 AND NOVEMBER 20, 2007. DOES NOT APPLY TO MACK TRUCKS AUSTRALIA. *PE UPDATED 9/15/08. *PE
SB 215-033
Jul 18, 2008
062200 ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
MACK TRUCK: REVISED FAN RING BRACKET MOUNTING SCREWS. A LONGER MOUNTING SCREW (PART NO. 945444) FOR THE LEFT-SIDE FAN RING MOUNTING BRACKET WAS IMPLEMENTED INTO PRODUCTION ON ALL CXU, CHU AND GU MODEL CHASSIS. *PE
SB 232028
May 30, 2008
061000 ENGINE AND ENGINE COOLING:ENGINE
FAN RING TO FAN SHROUD CLEARANCE ON GU MODEL CHASSIS EQUIPPED WITH EITHER AN MP7 OR MP8 ENGINE. *PE
SB 234022
May 29, 2008
063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
INTERFERENCE BETWEEN EXHAUST PIPE U-BOLT AND SLEEPER RAIL. (NOT APPLICABLE TO MACK TRUCKS AUSTRALIA). *PE
SB 531014
May 21, 2008
060000 ENGINE AND ENGINE COOLING
REVISED AIR COMPRESSOR DISCHARGE LINE - MP8 ENGINES. (ALSO APPLIES TO MACK TRUCKS AUSTRALIA). *PE
SB 214054
May 20, 2008
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
SUPPLEMENTAL AIR VALVE AND FITTING ARRANGEMENTS - NON-CATALYZED DPF. (DOES NOT APPLY TO MACK TRUCKS AUSTRALIA). *PE
SB 493002
May 19, 2008
105000 POWER TRAIN:DRIVELINE
REVISED FASTENERS FOR TELMA YOKE AND ROTOR-TO-COMPANION FLANGE - GU, MRU AND LEU MODELS WITH TELMA RETARDER. *PE
PI 663
May 16, 2008
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
MACK TRUCK: ENGINE MANAGEMENT SYSTEM (EMS) SOFTWARE UPGRADE - MACK MP8 ENGINES. THE SOFTWARE INCLUDES A REDUCTION IN THE PEAK INJECTION PRESSURE. MODEL AND MODEL YEARS UNKNOWN. *PE
SB-213052
May 6, 2008
061200 ENGINE AND ENGINE COOLING:ENGINE:DIESEL
MACK TRUCKS: ROCKER SHAFT OIL TRANSFER TUBE INSTALLATION - MP7 ENGINES. POSSIBLE TO INSTALL THE ROCKER SHAFT OIL TRANSFER TUBE BETWEEN THE ENGINE BRAKE CONTROL VALVE OR INTERMEDIATE SECTION (NON-BRAKE ENGINES) AND THE ROCKER SHAFT INCORR
SB 234020
May 2, 2008
062300 ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS
DIFFERENTIAL PRESSURE SENSOR HOSES AND CLAMPS - NON-CATALYZED DIESEL PARTICULATE FILTER (DPF) USED ON MRU AND LEU MODELS. (DOES NOT APPLY TO MACK TRUCKS AUSTRALIA). *PE
SA-214-013
Apr 30, 2008
061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
MACK TRUCK: US '04 MP7 SERVICE REPLACEMENT TURBOCHARGERS. A CAMBERED VANE TURBOCHARGER HAS BEEN RELEASED TO ADDRESS HIGH CYCLE FATIGUE FAILURE IN US '04 MP7 EQUIPPED HIGHWAY CHASSIS. MODEL AND MODEL YEARS UNKNOWN. *PE
SB214023
Apr 30, 2008
061120 ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
VARIABLE TURBINE GEOMETRY (VTG) TURBOCHARGER TROUBLESHOOTING AND CALIBRATION. MACK ASET AC. THIS BULLETIN SUPERSEDES 214-023 DATED 7/24/2003. *TT UPDATED 6/11/08. *NJ
SB234019
Apr 30, 2008
017500 STEERING:LINKAGES:TIE ROD ASSEMBLY
MACK TRUCKS - EXHAUST TIE ROD MOUNTING BRACKET--CXN AND CHN MODELS (MODEL YEAR UNKNOWN). *NJ